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[83 + (63 – 8 x 7)] : 6 + 3 =

Răspuns :

63-56=7

(83+7):6+3= 90:6+3= 15+3= 18

[83+(63-8*7)]:6+3

[83+(63-56)]:6+3

(83+7):6+3

90:6+3

15+3=18